diff --git a/system-dev/docs/3-specs/library-map/design.md b/system-dev/docs/3-specs/library-map/design.md
index 1a89446..8310d7a 100644
--- a/system-dev/docs/3-specs/library-map/design.md
+++ b/system-dev/docs/3-specs/library-map/design.md
@@ -1,6 +1,6 @@
 ---
 status: draft
-note: 依 D35 單一活性，本 SDD 以 draft 出稿；轉 active 由總管/leo 對照 Arcrun 現行 active SDD 裁定。
+note: leo 2026-07-19「藏書地圖可以走」＝design confirmed 可動工（M1/M2 起跑）；active 標記待對照 Arcrun 現行 active SDD 收斂。
 ---
 # library-map（藏書地圖）— Design